220012110121 has 2 divisors, whose sum is σ = 220012110122. Its totient is φ = 220012110120.

The previous prime is 220012110113. The next prime is 220012110163. The reversal of 220012110121 is 121011210022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 219552222096 + 459888025 = 468564^2 + 21445^2 .

It is a cyclic number.

It is not a de Polignac number, because 220012110121 - 2³ = 220012110113 is a prime.

It is not a weakly prime, because it can be changed into another prime (220012110221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110006055060 + 110006055061.

It is an arithmetic number, because the mean of its divisors is an integer number (110006055061).

Almost surely, 2^220012110121 is an apocalyptic number.

It is an amenable number.

220012110121 is a deficient number, since it is larger than the sum of its proper divisors (1).

220012110121 is an equidigital number, since it uses as much as digits as its factorization.

220012110121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 220012110121 its reverse (121011210022), we get a palindrome (341023320143).

Subtracting from 220012110121 its reverse (121011210022), we obtain a palindrome (99000900099).

The spelling of 220012110121 in words is "two hundred twenty billion, twelve million, one hundred ten thousand, one hundred twenty-one".